Home / 120,091.75-165,726.64-66,376.77

Finding the Fourth Proportional to 120,091.75, 165,726.64 and 66,376.77

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Solution

The fourth proportional to 120,091.75, 165,726.64 and 66,376.77 is: 91,599.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,091.75 : 165,726.64 = 66,376.77 : x
  2. Step 2: Convert to fraction form
    120,091.75/165,726.64 = 66,376.77/x
  3. Step 3: Cross multiply
    120,091.75x = 165,726.64 × 66,376.77
  4. Step 4: Simplify right side
    120,091.75x = 11,000,398,527.65
  5. Step 5: Solve for x
    x = 11,000,398,527.65/120,091.75
  6. Step 6: Final answer
    x = 91,599.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.